Stock motor RPM!

[r6stu]

After my car seemed to go backwards today I think I need a new motor!

My P2k just seems sooooo slow compared to other motors!

what is a good rpm for a stock motor? I was looking @ the P2k2 this says rpm is 19200 / 28000 is this a good motor?

whats the Paradoz 2k motor specs?

[gozone]

In my club, the stock racers mainly run Trintiy Monster stock motors, with racing brushes, and soemthímes, harder brush springs also..

One of the best ways to obtain more RPM from a stockmotor is simply to shim up the armature, as practically all stockmotors have more than plenty of slop in the armature, causing it to move back and forward through the housing, again causing the brushes to generate sparks, burning the surface of the armature, and thereby, losing power..

Last night, a friend of mine in the club had just skimmed the armature, shimmed the slop, added new racing brushes, and lubed the shaft, and a run on the orion motortester at 7,2 volt showed no less than 50.780 RPM, no-load, which i find pretty impressive, compared to the standard specs..

Also it can be a very good idea to break in a new stockmotor by skimming the armature.. As they are meant to be some kind of low-budget motors, they are not made to the same hi-specs as the hottest mod-motors, so pre-skimming the motor before running can often give quite a few extra RPM´s also..

 

Cheers..

Michael

[minijosh]

I bought a pair of the new C027's from Trinity and my friend with a dyno and all the toys took them and hooked them up. He's gotten them up to 36,000. How you like that for a stock motor?

[r6stu]

I was looking @ them and they not BRCA legal! :-(

[minijosh]

Only if you are racing in a BRCA sanctioned race. Local clubs run whatever they want. We do and we are BRCA.

[Murfick]

I have a Green Monster stock 27t motor, that I asked tamiya club member Entox to have a look at it, he skimmed it and changed the brushes, and it went from 29800 to 39900rpm, and is still BRCA legal. Drop him a line and see if he is willing to look at it.

Clive

[GPZ1000RX]

Although 24degrees is the "mild" advance set up with a stock motor it's still a lot of advance!

10 to 12deg is about it for a modified motor.

This sort of advance (24) produces a lot of arcing and therefore the comm needs regular skimming to keep the performance up to scratch.

The problem is worsened by the many racers who insist on high gearing (larger pinion and/or smaller spur) when running on tight tracks, the overgearing stops the motor getting to the high revs needed to take advantage of the high advance, with the result that the car never gives of its best and the comm arcing becomes worse.

Modern stock motors are high performance specialist pieces of kit and need to be maintained accordingly, ie. about every 5 X 5min races.

For general horsing around a not too hot budget modified with the timing at 10ish deg would perform as well and need much less maintenance.